[3][4][5] Labbett has appeared as a contestant on several other television quiz shows and is a regular in quizzing competitions.

Mark Andrew Labbett was born on 15 August 1965 in Tiverton, Devon and attended Bishop Wordsworth's School in Salisbury.

[8] Labbett became interested in quizzing when working at Butlins holiday camp, where he supplemented his income with winnings from the quiz machines.

[9][15] As captain, he led the Welsh quiz team to fifth place in the 2006 European Quizzing Championships.

[22] Labbett is one of the "chasers" in the ITV teatime quiz The Chase, first broadcast in 2009 and hosted by Bradley Walsh.

In August 2013, Labbett appeared as the only chaser on the American version of The Chase on Game Show Network.

[2] Although ABC had considered adding Labbett to the show with its first season,[26] his contract was not renewed for the third.

[31] Following Labbett's separation from his wife, in early 2023, he began dating television presenter Hayley Palmer.